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INTV123

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  1. INTV123
    I have both a Gemini and a 2600 4 switch that both won't read carts inserted into them and just give garbage on screen and make noise. Tried bending and cleaning the pins with no improvement. Is this a bad cpu or possibly broken solder joint? couldn't find any info on this.
  2. INTV123
    how long do you think that will be?
  3. INTV123
    does anyone have an RA-3-9600 Chip? still trying to find one, everyone who seems to have one stops responding, want to try again.
  4. INTV123
    Thanks! send a PM
  5. INTV123
    ive had a broken INTV 3 for awhile, and i narrowed the problems with it down to either a bad CPU or RAM chip. Found a working intellivison 2 recently and tried swapping some chips from the 3 to the 2, and found that the ram did the exact same thing as when it was in the intv 3. The CPU worked fine. Figured i may as well see if i can find a replacement chip from someone.
  6. INTV123
    Yea the plastic was slightly yellowed above the chip when I got it and will burn you after a few minutes of running. Also I meant the lines are horizontal with the text.
  7. INTV123
    like after a few seconds parts of the letters will be shifted over from where they should be and shake slightly. I can post pics tonight of it.
  8. INTV123
    I've been trying to mod my intellivion 2 to output composite video. I almost have the thing working, but the video signal is still having problems. text characters will start to shake after about 3 seconds of running, and there is a white line going down the screen lined up with the characters. I tried putting a 2000uf cap across the 5v line, but that didn't do anything. Ive checked the mod board multiple time times, but haven't found any problems with it that fixed the signal. also the rf modulator never output any video signal so i don't have any way to see if its a problem with the console. also don't have any extra rf modulators or consoles to test with.
  9. INTV123
    Never mind, didn't change anything. i checked the voltages on the transistors and they are similar but not exactly the same as what was listed on the wiki.
  10. INTV123
    so... the cap on the video input side is measuring a short. that may be the problem; ill have to go buy a new cap to replace it with and see if that works. just wondering how it died in the first place?
  11. INTV123
    i wasn't getting any signal without the mod. its one i made myself and i checked for shorts before i hooked it up, but i figured it woudn't do anything if there was a problem.
  12. INTV123
    voltages on the video chip seems OK, same with the power supply. i'm assuming tp1-tp2 means between the two pins, and i'm getting 16.9vac.
  13. INTV123
    using this mod. Even without it though, the rf causes a drop. I relised that i didn't have the ground connected and when i did it fell even more to like 6v
  14. INTV123
    Pretty sure its the video chip, but can't tell. It's labeled ay-3-8900-1s... i think. Its hard to read.
  15. INTV123
    My intelvison 2 isn't outputting 12v when the rf modulator is connected. If I remove it the connection reads exactly 12v but as soon as its connected it drops to 11-6ish volts. Also was not getting any video from the rf out, and my composite mod is having problems keeping a stable signal. Wondering if the low voltage is the source of the problem. Also one of the ic's gets really hot and I'm not sure if that's related to the voltage or if that's normal. There is actually some yellowing inside the case in the area that its located.
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